Contents:
Section I: Contextual narrative
Section II: How to get started
Section III: 6 "projects" (activities for the student)
Section IV: Summary and summary figure
Section IV: SUMMARY
Summary Image : Cas A "Energy vs. Counts" with elements
Printable image
We have come full circle; the ancient star that once shone in the night sky billions of years ago, has exploded and sent out the material for future stars into space, where someday, possibly billions of years from now, the calcium we see in the spectrum may ultimately form into alien bones, and the oxygen may form part of a planetary atmospere where life may flourish. So things are not so bleak after all. Even though our Sun may die, the seeds for its rebirth are contained within itself, to be recycled, possibly endlessly, through the vastness of space and time.
"To everything, turn, turn,turn
There is a season, turn, turn, turn
And a time to every purpose under heaven...
A time to be born, a time to die...
A time to build up, a time to break down...
A time to cast away stones,
A time to gather stones together..." -The Byrds
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